From bfa8555a27ae8a7b1290d9c6565e1ee7cd6213f7 Mon Sep 17 00:00:00 2001
From: derekyjy <17701711451@163.com>
Date: Mon, 23 Mar 2026 09:31:39 +0800
Subject: [PATCH 1/2] fix: add file open check in utils.cpp

---
 source/source_hsolver/module_genelpa/utils.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/source/source_hsolver/module_genelpa/utils.cpp b/source/source_hsolver/module_genelpa/utils.cpp
index 6654c33b9e..a0304f950a 100644
--- a/source/source_hsolver/module_genelpa/utils.cpp
+++ b/source/source_hsolver/module_genelpa/utils.cpp
@@ -91,10 +91,15 @@ void loadMatrix(const char FileName[], int nFull, double* a, int* desca, int bla
 
     const int ROOT_PROC = 0;
     std::ifstream matrixFile;
-    if (myid == ROOT_PROC)
+    if (myid == ROOT_PROC){
         matrixFile.open(FileName);
 
-    double* b; // buffer
+	if (!matrixFile.is_open()) {
+        std::cerr << "Error: failed to open file " << FileName << std::endl;
+        exit(EXIT_FAILURE);
+    }
+    }
+double* b; // buffer
     const int MAX_BUFFER_SIZE = 1e9; // max buffer size is 1GB
 
     int N = nFull;

From c96bd93e364b77b8fae7fb00f81cd89d7cb2d07f Mon Sep 17 00:00:00 2001
From: derekyjy <17701711451@163.com>
Date: Mon, 23 Mar 2026 09:34:30 +0800
Subject: [PATCH 2/2] fix: add file open check in utils.cpp

---
 source/source_hsolver/module_genelpa/utils.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/source_hsolver/module_genelpa/utils.cpp b/source/source_hsolver/module_genelpa/utils.cpp
index a0304f950a..69eb885eb3 100644
--- a/source/source_hsolver/module_genelpa/utils.cpp
+++ b/source/source_hsolver/module_genelpa/utils.cpp
@@ -97,7 +97,7 @@ void loadMatrix(const char FileName[], int nFull, double* a, int* desca, int bla
 	if (!matrixFile.is_open()) {
         std::cerr << "Error: failed to open file " << FileName << std::endl;
         exit(EXIT_FAILURE);
-    }
+        }
     }
 double* b; // buffer
     const int MAX_BUFFER_SIZE = 1e9; // max buffer size is 1GB